The Werra is a series of 35mm viewfinder or rangefinder cameras manufactured by the Carl Zeiss Jena factory which was primarily a lens-making plant. The Werra is named after a small German river. The cameras offer a high degree of control with a minimum number of levers, knobs or rings. In their simplest incarnations, the Werras featured only a shutter release button on the top plate. With it's streamlined styling, one could call the Werras a design camera.